Hose-coupling.



C. H. LAMBKIN.

HOSE COUPLING.

APPLICATIQN man Nov. 27A 1914.

l 8 l ,676 Patented May 2, 1916.

Z9 i5 ZZ Il', i

UNITED sTATEs PATENT oEEIoE.

CHARLES H. LAMBKIN, OF NEW YORK, N. Y.

HOSE-COUPLING.

T o all 'whom t may concern.'

Be it known that I, CHARLES H. LAMB- KIN, al citizen of the UnitedStates, residing at New York city, in the county of New York, State ofNew York, have invented certain new and useful Improvements inHose-Couplings; and I do declare the following to be a full, true, andexact description of the said invention, such as will enable othersskilled in the art to which it appertains to make use 0f the same.

The present invention provides a coupling designed for hose which mustmeet heavy pressures, the intent being to secure a tight joint between aheavy hose and a coupling member or between two sections of heavy hose.

The invention contemplates means for carrying out the foregoing purposesin a simple and efficient manner, and particularly in connection withhose which may be considerably eccentric as to its bore, and also meansfor giving considerable adjustability so that hose with considerablevariation of thickness of wall may be accommodated.

With these and other objects in view, my invention consists of certainnovel features of combination, construction and arrangement of parts aswill be more fully described and pointed out in the appended claims.

In the drawings, Figure 1 represents a longitudinal section through oneform of my invention; Fig. 2 represents an end section of Fig. 1 on theline 2 2; Fig. 3 represents a section of Fig. 1 on the line 3-3; Fig. 4represents a section through another form of my invention.

The corresponding parts are referred to both in the drawings and in thespecification by similar reference characters.

In the drawings 10 represents generally a main coupling member which isprovided with a conical projection 11, which in some forms of myinvention I preferably provide with a thread 12 by which the couplingmay be screwed into the hose. The main coupling member 10 is providedwith a shoulder 13. Adjacent this shoulder I provide a reduced portion14 of any suitable shape, as hexagonal, over which is fitted a sleevemember .15 having a correspondingly shaped opening in an inwardlyprojecting flange thereof. This sleeve member is preferably providedwith an externally threaded portion 16 and the main coupling member 10is Specification of Letters Patent.

Patented May 2, 1916.

Application led November 27, 1914. Serial No. 874,164.

preferably provided with a threaded portion 17 on which is a nut 18arranged to prevent the sleeve 15 from moving to the left of Fig. 1 onthe main coupling 10. As will be shown in Fig. 1, the shoulder 13 andthe nut 18 maintain the sleeve 15 in a definite relation with the maincoupling 10.

In my4 preferred form I provide an internally threadedslecve 19 whosethreads engage with the threaded portion 16 of the sleeve 15, and isprovided with any usual form suchas the octagonal part 20 by which thesleeve 19 may be screwed up on the threaded portion 1G. The sleeve 19has an inwardly projecting portion 21 which vbears against an externallytapered portion 22 of a slotted sleeve 23 which engages with theexterior of the hose on the tapered portion 11 of the main coupling 10.This slotted sleeve 23 is provided with a sufficient number of slots 24extending in from its righthand end in Fig. 1, so that the sleeve itselfmay be compressed radially. The sleeve 23 is freely movablelongitudinally unless held by the clamping action of the sleeve 19.

In my preferred form, I make the hexagonal portion 14 of the maincoupling 10 somewhat smaller than the corresponding opening in the angeof the sleeve 15. I also bevel away the shoulder 13 and the inner edgeof the nut 18 so that, assuming there is no hose in the coupling, themember 15 and of course the sleeves 19 and 23 therewith, are free to beangled about the hexagon 14 and even to be moved laterally with relationthereto. When this is done, it will be seen that the sleeve 15 is nolonger concentric With the main coupling` 10, as it normally would be,and that the sleeve 23 will be nearer on one side than the other to thetapered portion 11 of the main coupling 10.

Assuming that the hose to be coupled has uniform thickness of walls, orin other words, that the bore is concentric with the exterior, it willbe seen that it may be first A,screwed on the tapered portion 11, andthat then the sleeve 23 may be slipped over the exterior of the hose andthe sleeve 19 slipped over the sleeve 23 and engaged with the threads onthe threaded portion 16. Now when the sleeve 19 is turned to screw upthe threads the portion 21 thereof will slide up the externally taperedportion of the sleeve 23, thus bringing the tongues thereof inwardly tocompress the hose on the tapered portion 11. This serves, of course, tomake a tight joint between the hose and the coupling 10. If, as is oftenthe case, the bore of the hose is not concentric with its exterior, thesleeve 23 will be free to adjust itself to correspond with thisinequality, if the loose construction which I have previously describedis provided at the hexagon 14. It will be obvious that within the limitsof this joint the sleeve 23 is free to float in relation to the taperedportion 11, and since the sleeves 15 and 19 are also free to float, thecoupling will adjust itself to suit the inequalities in the walls of thehose.

By making the sleeve 23 so that it is free to be moved longitudinally,it will be seen that if a hose were used, for instance, with one-halfthe thickness of wall of that shown in Fig. 1, the sleeve 23 may bedrawn to the right until it is compressed enough to Contact with thisthinner wall. Thereafter, when the sleeve 19 is turned, it will serve tocompress the rubber as before. In other words, by making this sleeve 23free to be moved longitudinally, I have provided additional adjustmentsby which the range of the coupling is greatly increased.

In Fig. 4 I have 'shown a modification of the structure shown in Fig. 1by which I am able to couple together two pieces of hose,

particularly where such hose has burst. In

this device, the main coupling 30 is provided with an externally taperedportion 31 at each end and a shoulder 32. An externally threaded sleeve33 has a flange engaging with the shoulder 32 and held thereagainst by anut 34 screwed on threads provided on the main coupling 30. Each end ofthis coupling is provided with sleeves 35 and slotted sleeves 36, allhaving the same arrangement as already described in connection withFig. 1. The operation of this structure is similar to that in Fig, 1.Since the two ends are alike, and are connected, it is, of course, notpossible for the same adjustments to take place in reference to eachend. For instance, if the hose on the right had its bore concentric withits exterior and the hose on the left had its bore eccentric to itsexterior, these discrepancies would not be taken up by the coupling.Since this form of coupling is intended, however, primarily to connecttwo ends of hose which have been cut apart, it is seen that if one ofthem is eccentric, the other one will be also, and that in such case thecoupling will take up the eccentricities of both hoses.

It should be understood that for many purposes the loose connectionwhich I have shown around thev hexagon 14 in Fig. 1, and around theflange connecting the sleeve 33 with the coupling 30 of Fig. 4, is notabsolutely required unless it is intended to provide for taking upinequalities in the walls of the hose. Consequently, the various sleevesare normally concentric with the main coupling 10, and their axes agreewith the axis of that member. By providing the looseness described,however, I am enabled to have the external sleeves move so that theiraxes no longer coincide with the axis of the main coupling 10, and thisis accomplished irrespective of whether it is done by tilting thesleeves around the hexagon 14 or by moving them bodily in any directionkeeping their axes parallel to the axis of the coupling 10.

AIt will be understood that many variations may be made in my devicewithout departing from my invention, and that the forms shown in thedrawings are merelyl for purposes of illustration.

1. In a hose coupling, a coupling member adapted to extend into theinterior of the hose, a sleeve coupling member loosely connectedthereto, a radially compressible clamping sleeve surrounding the hose onsaid coupling member, and a clamping member engaging with said sleevecoupling member and arranged to be drawn over said clamping sleeve tocompress it on the hose, said clamping sleeve being freely movablelongitudinally, the connection between said sleeve couplingmember andsaid coupling member being constructed and arranged to permit saidsleeve member, sleeve and clamping member to move relatively to saidcoupling member to accommodate hose with an eccentric bore.

2. In a hose coupling, a double ended coupling member,veach end beingadapted to extend into a hose, an externally threaded sleeve fittingloosely ,over said coupling member and normally concentric therewith andconnected thereto so as to permit its axis to be moved outof the axis ofsaid coupling member, a pair of internally threaded sleeves with thethreads thereof engagingi the threads of said externally threaded sleeveand a slotted sleeve between each of said internally threaded sleevesand said coupling member, said slotted sleeves and said internallythreaded sleeves being constructed and arranged to compress the hose`onsaid coupling member when said internally threaded sleeves are screwedonto said externally threaded sleeve.

CHARLES H. LAMBKIN.

Witnesses:

W. R. WARNER, LOUISE M. BRUNS.

